EP2723829A1 - Process and apparatus for continuous production of densified charcoal - Google Patents
Process and apparatus for continuous production of densified charcoalInfo
- Publication number
- EP2723829A1 EP2723829A1 EP12801911.4A EP12801911A EP2723829A1 EP 2723829 A1 EP2723829 A1 EP 2723829A1 EP 12801911 A EP12801911 A EP 12801911A EP 2723829 A1 EP2723829 A1 EP 2723829A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- organic material
- reaction
- reaction vessel
- zone
- vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/02—Stationary retorts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B37/00—Mechanical treatments of coal charges in the oven
- C10B37/04—Compressing charges
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/02—Stationary retorts
- C10B1/04—Vertical retorts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B3/00—Coke ovens with vertical chambers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
Definitions
- the invention relates to a process and apparatus for large-scale production of densified charcoal, which can be used in applications including chemical reagents, fuels and absorbents.
- charcoal has a substantially lower density than comparable coal products.
- a method of increasing the charcoal density, while maintaining an economically attractive price needs to be developed.
- charcoal density needs to be increased by a factor of 2 - 3 times from a range of 0.2 - 0.5 g/cm 3 (this density range is common to charcoal produced using conventional methods from typical wood sources) to a density of 0.6 - 1.0 g/cm 3 .
- HDWP high-density wood pellets
- Methods (1) above usually employs compression of sawdust, preheated up to 220°C, or sometimes even to 250°C, by pressures in excess of 2,000 bars (e.g. for the pellet machine the pressure may vary between 2,000 bars and 4,500 bars ).
- the process includes converting wood or other organic material into sawdust, conditioning it to the required moisture content and temperature, pelletising or extruding it at high pressure and then cooling it down to the ambient temperature. Subsequently, the densified material undergoes a conventional pyrolysis. Equipment used for such a densification of raw materials is relatively complex and in the case of extruded bars, has a limited productivity.
- Hawley also determined that to obtain dense charcoal the pressure applied to the material undergoing pyrolysis may be up to three orders of magnitude lower than that applied to the material at temperatures of up to 220°C to achieve compression. This effect was associated with a softening of ligno-cellulosic material at the higher temperatures, and therefore a reduction in its mechanical strength, allowing greater compression. Hawley concluded that for common wood species substantial softening occurs within the temperature range of 280°C to 300°C (US 1369428). Pressure applied to ligno-cellulosic material softened by heating to temperatures in this range, results in greater compression of the material.
- densified charcoal obtained this way was found to be more dense (less porous) than charcoal obtained by the conventional pyrolysis of densified raw materials (e.g. HDWP).
- densified raw materials e.g. HDWP
- the process described by Hawley is a batch process. No commercial densified charcoal production methods using this process are known.
- Danilov (Russian Patent 2217468) proposed a continuous process for production of dense charcoal.
- ligno-cellulosic material preferably sawdust
- a screw extruder at temperatures of up to 280°C and pressures of up to 1200 bars.
- the material was then directed in to a tubular pyrolysis reactor where it was further compressed by a plunger pushing down on the material and pressurised by pulses of hot high-pressure gases entering the reactor through perforated side walls.
- the reaction vessel required external heating. No commercial densified charcoal production methods using this process are known.
- an apparatus for the continuous thermal decomposition of organic material comprising: a feeder for supplying organic material to a reaction vessel, the reaction vessel supporting a reaction bed of organic material, the reaction vessel defining a flow path along which the organic material undergoes a carbonisation process as it progresses through the reaction vessel, the reaction vessel comprising: a pressure applicator to compact the reaction bed, a reaction zone for autogenous reaction of organic material in the reaction bed, at least one gas outlet from the reaction zone to extract at least a portion of the pyroligneous gases from the reaction bed, v
- a cooling zone to reduce the temperature of the material and to extract heated gas from the reaction bed, and at least one discharge port for discharging carbonised organic material from the reaction vessel.
- the reaction zone, cooling zone and discharge port are arranged sequentially along the flow path through the reaction vessel.
- the at least one gas outlet removes gases directly from the reaction bed and may include at least one lance extending into the reaction zone, and more preferably multiple lances.
- the reaction vessel has a decreasing cross sectional area at least in or in the vicinity of the reaction zone.
- the preferred form has the inner walls tapering inwardly towards the discharge end of the reaction vessel at least in the vicinity of the reaction zone. This provides a decreasing cross sectional area which compresses the reaction bed as it progresses along the reaction vessel.
- the vessel may be vertically mounted and so the inner walls taper inwardly down the vessel at least in the vicinity of the reaction zone.
- the lance or lances which extend from the discharge end of the reaction vessel have a cross sectional area which decreases towards the reaction zone to further compress the reaction bed.
- the reaction vessel is provided with a gas outlet or outlets above the raw material inlet for the removal of pyroligneous gases. This allows the hot pyrolysis gases and vapours to pass through the entering material to heat it to the temperatures at which autogenous pyrolysis occurs before it is heavily compressed.
- At least one acoustic emission device for transmitting sound energy into the reaction zone is mounted in proximity to this zone.
- the acoustic emission device is positioned on the lance.
- Another possible positioning of the acoustic device is on the external wall of the reactor. The acoustic-frequency vibrations initiated by these devices will also assist the pyroligneous gases escaping from the compressing reaction bed formed in the vicinity of the reaction zone.
- the temperature range at which the ligno-cellulosic material softens is limited to a narrow range.
- a typical temperature range for softening of wood material is 280°C - 300°C, but simple experimentation can be used to determine the range for any given feed material.
- pressures in excess of 2000bar are required to densify the unsoftened material prior to pyrolysis.
- the temperature distribution across the material in the reactor is uniform. It is desirable that the ligno-cellulosic material within a given transverse cross-section of the reactor (located in the relevant temperature zone) does not deviate outside this temperature range.
- Non-uniform heating of the ligno-cellulosic material results in segments of ligno- cellulosic material being heated to below the desired temperature range and/or above the temperature range. This results in non uniform density of ligno-cellulosic heated to below the desired temperature range being insufficiently softened and ligno-cellulosic material heated to above the temperature range being partially charred or pyrolysed.
- the material may not densify sufficiently in the case of underheated material or shatter in the case of charred material without increasing in density.
- the density of the final product will be an inferior product as it will be less than that of a pyrolysed uniformly dense bed of lingo-cellulose material.
- the gas permeability through a bed of compressed material of non uniform density will be non uniform.
- a process for the continuous production of densified charcoal comprising the steps of: establishing a reaction bed of organic material undergoing autogenous decomposition in the reaction bed of a reaction zone; heating dry organic material and loading the organic material into the reaction vessel; heating the loaded dry organic material to a temperature to soften the organic material; applying pressure in the range of greater than zero bar to 10 bar to compress the organic material; progressing the compressed organic material into the reaction bed zone of the reaction vessel while raising the temperature of the compressed organic material to a temperature at which autogenous decomposition of the organic material occurs; retaining the compressed the organic material in the reaction zone for a period to undergo autogenous decomposition; and discharging carbonised organic material from the reaction vessel.
- the dry material has a moisture content of from 0 to 1wt%. More preferably, the moisture content of the dry material is from 0 to 0.5wt%. Even more preferably, the moisture content is less than 0.5wt%. It is preferable that in the heating zone of the vessel, the organic material is initially heated to a temperature of 280 - 300°C to soften the organic material. Gases originating from the autogenous decomposition of the organic material travel counter current to the dry organic material fed into the reaction vessel to heat the organic material to a temperature of 280 - 300°C where the ligno cellulose material softens. Ideally the material is heated uniformly across the cross section to provide a uniform softening of the material.
- the pressure is in the range of greater than zero bar to 10 bar and preferably in the range of 3.5 to 8.5 bar. It is preferred that the pressure is applied mechanically through a plunger and the plunger rotates prior to or during compression to provide a surface level with the surface of the plunger. In this way a substantially uniform thickness for each load of ligno- cellulosic material in the compressed state may be obtained.
- the pressure is reduced and further dry organic material, preferably initially heated to a temperature of up to 150°C is fed into the reaction vessel.
- the fresh material is heated to a temperature between 280 - 300°C and the application of pressure to this material then occurs to compress the softened fresh ligno-cellulosic material.
- the intermittent application of pressure not only compresses the softened fresh material but also progresses the compressed organic material into the autogenous region of the vessel.
- the compressed material may thus progress as a slug of material into the reaction zone of the reaction vessel where autogenous decomposition occurs to the resultant densified charcoal.
- gases may be removed from the reaction zone through at least one gas outlet, preferably at least one lance which extends into the reaction zone.
- the amount of gases removed should not be so great as to prevent vapours rising into the heating zone of the reaction vessel where the incoming dry organic material is heated to its softening temperature.
- the invention provides a process for the continuous thermal decomposition of organic material in a reaction vessel in which the autogenous decomposition of the organic material has been initiated, the process comprising the steps of: heating dry organic material and loading the organic material into the reaction vessel; heating the loaded dry organic material to a temperature to soften the organic material; applying pressure in the range of greater than zero bar to 10 bar to compress the organic material; progressing the compressed organic material into the reaction bed zone of the reaction vessel while raising the temperature of the compressed organic material to a temperature at which autogenous decomposition of the organic material occurs; retaining the compressed the organic material in the reaction zone for a period to undergo autogenous decomposition; and discharging carbonised organic material from the reaction vessel.
- Figure 1 is a side sectional view of an embodiment of the invention.
- Figure 2 is a sectional view through A-A of figure 1. Detailed description of the embodiments
- the present invention provides an apparatus for autogenous production of densified charcoal, that is charcoal with a density of at least 2 times greater than conventional charcoal.
- the reaction vessel comprises three main zones, a heating zone, an exothermic reaction zone, and a cooling zone.
- the heating zone the material is heated to an appropriate temperature. Heating can be provided by hot pyroligneous vapours ascending from the lower areas of the reaction vessel, particularly the exothermic reaction zone.
- the decomposition and/or carbonisation process generates an excess of heat. Pyroligneous vapours may also be formed, which can ascend to the heating zone to heat the organic material in the heating zone.
- the decomposition process is accompanied by a carbonisation process that progresses as the organic raw material passes through the vessel. Pressure can be applied to the material in the exothermic reaction zone, allowing for densification of the final charcoal product.
- the pressure may be a mechanical pressure, such as through compression via a plunger type arrangement. Acoustic vibrations may also be provided to the material to enhance compression.
- the apparatus comprises a reaction vessel [1], at least one organic raw material feeder [2], a plunger shaft [3], at least one inlet [4], a plunger drive [5], a plunger [6], a gas outlet [7], a corrosion resistant lining [8], an insulation layer [9], externally mounted acoustic emitters [10], a cooling water inlet [11], a cooling water outlet [12], a cooling gas inlet [13], a cooling gas outlet [14], a lance [15], a retractable platform [16], a discharge port [17], gate valves [18], a hollow conduit [19], vapour extraction vents [20], internally mounted acoustic emitters [21], a vapour extraction system [22], a heating zone [23], an exothermic reaction zone [24], a cooling zone [25], cooling water inlets [11 A and 11B] for supplying cooling water to cooling water heat exchangers [26A and 26B] with associated cooling water outlets [12
- the apparatus comprises a reaction vessel [1] and an organic raw material feeder [2].
- the apparatus further comprises appropriate monitoring and control systems.
- the reaction vessel [1] comprises, a reactor wall, an inlet to the reactor and a discharge port for the reaction vessel.
- the inlet to the reaction vessel is provided with a pressure applicator (plunger [6]) driven by a plunger drive [5] to apply pressure to the material in the reaction vessel.
- the reaction vessel further comprises at least one gas outlet for removing at least a portion of the gases directly from the reaction bed.
- the preferred form includes a lance [15] or lances which protrude from the exterior of into the reaction vessel for extracting gases from the interior of therefrom.
- the lance or lances comprise a hollow conduit [19], vapour extraction vents [20] that extend along the lance [15] throughout the exothermic reaction zone [24] and are connected at the base of the lance to a vapour extraction system [22].
- the lance may further be provided with acoustic emitters [21] that extend along the lance [15] throughout the exothermic reaction zone [24]. Additional acoustic emitters [10] may be mounted on the external surface of the reactor wall opposite to the emitters positioned in the lance.
- ⁇ material loaded into the reaction vessel needs to be dry and preheated to at least 150°C; • fresh material, entering the reactor from the top, is heated further by hot pyro- strigous vapours ascending from the exothermic reaction zone of the reaction vessel to a temperature at which the process becomes exothermic (about 300°C); ⁇ a limited gas permeability of the material is maintained by screening out the very fine fractions; and
- the pressure of vapours in the exothermic reaction zone of the reaction vessel may rise substantially over the ambient pressure; as a result, even limited gas permeability is sufficient for heating gases/vapours to filter through the material upwards, towards the gas/vapour outlet.
- the present invention provides a continuous process for the production of densified charcoal, through application of an external mechanical pressure to ligno-cellulosic or other charring carbonaceous material that undergo pyrolysis in a fully autogenous mode.
- Conversion of organic raw material to carbonised organic material (charcoal) occurs in an insulated reaction vessel [1] that may be continuously operated.
- the charcoal production apparatus comprises an insulated raw material feeder [2] for supplying organic material to the reaction vessel [1] with a nominally vertical orientation. While a nominally vertical orientation is preferred, it is not necessary.
- the plunger is in the top position. No external pressure is applied during the loading process.
- reaction vessel [1] can be positioned at any angle, as the flow of vapours inside the reaction vessel [1] are not affected substantially by buoyancy convection.
- organic raw material heated to at least 150°C is fed into the reaction vessel and then the temperature of the material located in the exothermic zone [24] is raised to a temperature greater than 300C and preferably up to approximately 500°C by blowing hot gas though it.
- the preferred gas is heated air. No compression by the plunger [6] should be applied to the material during startup.
- Hot gas with the temperature of approximately 500°C is introduced into the exothermic reaction zone [24] preferably through the vents [20] in the lance [15] and the outflow of the gas to occur through the gas outlet [7].
- the combustion products can also be removed from the reactor through the gas outlet [7].
- Both halves of the retractable platform [16], the cooling gas inlet [13] and the cooling gas outlet [14] need to be closed during this operation to prevent the combustion process spreading downwardly instead of upwards.
- the amount of gas injected needs to be tightly controlled to prevent the overheating of the reaction vessel.
- the temperature of the material placed in the exothermic zone [24] reaches approximately 500°C, the flow of gas can be stopped and the reaction vessel [1] may be operated in the autogenous continuous mode with pressure applied to the material.
- the reaction vessel [1] converts organic raw material into charcoal through an autogenous process of thermal decomposition.
- the decomposition process is accompanied by a carbonisation process that progresses as the organic raw material advances from the entrance to the exit of the reaction vessel [1].
- Sufficient external mechanical pressure can be applied to the ligno-cellulosic or other charring carbonaceous material to compress material located in the exothermic reaction zone [24], allowing for densification of the final charcoal product.
- the material looses from typically 65 to 70% of its initial mass.
- the density of charcoal comprises approximately 80% of the density of the wood from which it is made.
- the volume of charcoal constitutes approximately 40% of the volume of wood it originates from. If the proposed densification process doubles the density of charcoal, then the volume of the product will be only 20% of the volume of the original wood.
- the pressure can be directly applied through use of a plunger drive [5] applying compression via a plunger [6].
- lateral wall mounted acoustic emitters [10] and acoustic emitters [21] that extend along the lance [15] in the exothermic reaction zone [24] can be used to generate low frequency acoustic vibrations. These low frequency acoustic vibrations can be applied to selected portions of the material in the reaction vessel [1] to amplify the effect of the compressive pressure exerted by the plunger [6].
- the reaction vessel [2] which comprises a series of reaction zones that the material passes through sequentially.
- three reaction zones have been designated; a heating zone [23], an exothermic reaction zone [24] and a cooling zone [25].
- the organic raw material being fed by the feeder into the heating zone of the reaction vessel is dry and at a temperature of at least 150°C.
- the pyroligneous vapour and gas can ascend to higher zones in the reaction vessel [1] conveying thermal energy to these zones.
- An external mechanical pressure may be applied through the plunger drive [5] driving the plunger [6] to compress the material in the reaction vessel [1].
- the applied mechanical pressure is such that the required level of gas permeability of material upstream of the exothermic reaction zone [24] is maintained, while being sufficient to compress and density the material located within the exothermic reaction zone [24].
- the mechanical pressure may be applied periodically, and may vary from greater than 0 to 10 bars gauge.
- the pressure distribution within the material in the exothermic reaction zone [24] is optimised by a varying cross-sectional area of the exothermic reaction zone [24].
- the lance preferably extends from the discharge end of the reaction vessel preferably up to the reaction zone of the reaction vessel creating an annular cross sectional area which is available for the passage of the reaction bed and product.
- the annular space decreases as the reaction bed progresses and the pressure distribution in the reaction chamber is optimised.
- the mechanical strength of ligno-cellulosic materials reduces with increasing temperature. As a result, the applied mechanical pressure will cause substantial compression of the material in the exothermic reaction zone [24]. A lesser degree of compression will be exhibited by material in the heating zone [23] due to the lower temperature, and therefore higher mechanical strength of material in the heating zone [23].
- a gas outlet or outlets remove gases directly from the reaction bed and in the preferred form is a lance in which the lance [15] extends into the exothermic reaction zone [24] and comprises a hollow conduit [19] with vapour extraction vents [20] that extend along the lance [15] throughout the exothermic reaction zone [24].
- the vapour extraction vents [20] are connected at the base of the lance [15] to a vapour extraction system [22]. This enables cross-flow of gases and vapours within the exothermic reaction zone [24] of the reaction vessel [2].
- acoustic emitters such as high temperature piezo-crystals may be provided on or in the vicinity of the lance.
- Vapours entrapped within the progressing reaction bed in the exothermic reaction zone are thought to increase porosity of the charcoal.
- the cooling zone [25] comprises a cooling water inlet [11] for supplying cooling water to a cooling water heat exchanger [26], and a cooling water outlet [12].
- the flow of cooling water through the cooling water heat exchanger [26] reduces the temperature of the material as it passes through the cooling zone [25].
- the cooling zone further comprises a retractable platform [16].
- a retractable platform [16] When the retractable platform [16] is in its retracted state, material is able to pass through the cooling zone [25] and into the discharge port [17]. When the retractable platform [16] is in its extended state, material in the cooling zone [25] is unable to pass into the discharge port [17].
- the inner sides of both halves of the retractable platform [16] (the sides directed towards the axis of the reactor) have cutting edges to facilitate the discharge of material if it becomes continuous in the course of its densification.
- the carbonised organic material is removed from the reaction vessel [1] through the discharge port [17].
- the discharge from the discharge port [17] is controlled by gate valves [18].
- the discharge port [17] comprises a water and gas cooling system for cooling the carbonised organic material prior to discharge.
- the water cooling system comprises cooling water inlets [11 A and 11B] for supplying cooling water to cooling water heat exchangers [26A and 26B], and cooling water outlets [12A and 12B].
- the gas cooling system comprises a cooling gas inlet [13] and a cooling gas outlet [14].
- the cooling gas introduced through the cooling gas inlet [13], rises through the carbonised organic material in the discharge port [17] and is extracted through the cooling gas outlet [14].
- the cooling gas extracts thermal energy from the carbonised organic material through direct contact heat exchange and becomes heated cooling gas.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Carbon And Carbon Compounds (AREA)
- Coke Industry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011902460A AU2011902460A0 (en) | 2011-06-23 | Process and apparatus for continuous production of densified charcoal | |
PCT/AU2012/000712 WO2012174594A1 (en) | 2011-06-23 | 2012-06-21 | Process and apparatus for continuous production of densified charcoal |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2723829A1 true EP2723829A1 (en) | 2014-04-30 |
EP2723829A4 EP2723829A4 (en) | 2014-11-19 |
EP2723829B1 EP2723829B1 (en) | 2019-01-02 |
Family
ID=47421908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12801911.4A Active EP2723829B1 (en) | 2011-06-23 | 2012-06-21 | Process and apparatus for continuous production of densified charcoal |
Country Status (9)
Country | Link |
---|---|
US (1) | US10364393B2 (en) |
EP (1) | EP2723829B1 (en) |
CN (1) | CN103619996B (en) |
AU (1) | AU2012272553B2 (en) |
BR (1) | BR112013031951A2 (en) |
CA (1) | CA2838475C (en) |
RU (1) | RU2600360C2 (en) |
WO (1) | WO2012174594A1 (en) |
ZA (1) | ZA201400550B (en) |
Families Citing this family (1)
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US9929023B2 (en) | 2015-11-19 | 2018-03-27 | Samsung Electronics Co., Ltd. | Method of manufacturing semiconductor device |
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CN101824348B (en) | 2010-01-27 | 2013-10-16 | 周晓南 | Method for preparing biomass compact fuel with rubber seed hull |
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2012
- 2012-06-21 AU AU2012272553A patent/AU2012272553B2/en active Active
- 2012-06-21 CN CN201280031016.8A patent/CN103619996B/en active Active
- 2012-06-21 RU RU2014102000/05A patent/RU2600360C2/en active
- 2012-06-21 BR BR112013031951A patent/BR112013031951A2/en not_active Application Discontinuation
- 2012-06-21 WO PCT/AU2012/000712 patent/WO2012174594A1/en active Application Filing
- 2012-06-21 CA CA2838475A patent/CA2838475C/en active Active
- 2012-06-21 US US14/128,514 patent/US10364393B2/en active Active
- 2012-06-21 EP EP12801911.4A patent/EP2723829B1/en active Active
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2014
- 2014-01-23 ZA ZA2014/00550A patent/ZA201400550B/en unknown
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AU2012272553B2 (en) | 2018-08-23 |
US10364393B2 (en) | 2019-07-30 |
NZ618670A (en) | 2016-01-29 |
EP2723829A4 (en) | 2014-11-19 |
RU2014102000A (en) | 2015-07-27 |
AU2012272553A1 (en) | 2014-01-09 |
CN103619996B (en) | 2015-09-16 |
EP2723829B1 (en) | 2019-01-02 |
RU2600360C2 (en) | 2016-10-20 |
US20140110241A1 (en) | 2014-04-24 |
BR112013031951A2 (en) | 2016-12-20 |
CA2838475C (en) | 2020-03-24 |
WO2012174594A1 (en) | 2012-12-27 |
ZA201400550B (en) | 2015-10-28 |
CA2838475A1 (en) | 2012-12-27 |
CN103619996A (en) | 2014-03-05 |
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